Thin-place detector



Dec. 11 1923. 1,477,035

W. F. CLAYTON THIN PLACE DETECTOR Filed Feb. 7 1922 4 Sheets-Sheet 175x92 1.9 i. 17 Z/ Z0 I l V 6 l i A n Dec. 11, 1923.

W. F. CLAYTON THIN PLACE DETECTOR Filed Feb. '7. 1922 -4 Sheets-Sheet 2GMM mm3 Dec. 11 1923. 1,477,035

W. F. CLAYTON v THIN PLACE DETECTOR Filed Feb '7. 1922 4 Sheets-Sheet 5Dec'. 11, 1923. 1,477,035

W. F. CLAYTON THIN PLACE DETECTOR- Fned Feb. v, 1922 4 sheis-shee1 4Patented Dee. 1i, 1923. v i i'QSS U NITE!) f-'P'TENT lF 4 THINJPLACEDETEGTOR z Application' filed lEebrueiryy 75111922. :Serial-NowBG,

To @Uw/0m mog/Cormerfni: .Figure 3 is wseeion'on vthe line 3-3 of 55 Reit known that .'[VILLIAM QD. CLAYTON, ligrure l; e citizen of the UnitedStates orfimerice, Figure i is a side eier/'ation or the :taire'residing4 at iuntsviiie, in Athe county gef up riitchet Wheel-andassociated paris; if Madison and Stute-oi 1abama,vhe,\7e-in Figure 4"'is a` side `.eie-Veti'on-:oil the end of vented certain new and usefulImprovements, a niodiiied forni of der-ent carrier. 60

in Thin-Piece.Detector@ oi'wwhieh the ifoi- 4f-I'igure 5 is a top pienofthe detenteiid lowing` is r specification. moerrier.

ii y invention reizites'ro` improvements vin Figure G` is eeid-e'elevation oi. the snake 1U ineens for r'eieeiing' the ypresenceeithin -iie`ed Witiinniy.improved fbi'essf fatieciied pieces inifziiirics' and for automaticallyrem-fiiiereto.; 65

edyingeucii defecte. VFigure 7 is a modified forni oi" the pari;

The "general object oi` my invention is 4iie which ispiaeed ebove'thesneieiiead; provision' oi ineens' for the eiitoinetic eonf Figure 8 isunedge 'View oif zi deviceio be iroi o1 'iiiie operation oi a loom, byWhicir-ueed'with a iooln4 equipped with a double menne the leoni kept'in' continuous operafilling fork; 70

itionyend thicie-` und thin fpieees inf the'iin- Figure 9-is a View at eright angle to the ieh'ed Weevefere. prevenied. View shown in Figure 8f;and

Anobjeet' o'myinvention is the construc- Figure '-10 is e `bottom pianView of the detion oi" zudeviee whichfwiil detect, aiter erife'disciosed in Figure 8.

certain predetermined number-foipieks, a Myinventionis'fshown:ittzichedto the 75 thin piace in zi ifzibrio Whileit' isy being;y 'usuel Draper iooni,'^=5ueii yusf Shown iut-he Woven ipurent to Northrop,L im. '52.959403 'andihzwilg Ai furtherobjeot yoif*rny invention yis -to @the usueibreast beam lfend starting-rod 2,

26 `nisethe arm ofthe thinpiace'detectorerrerl Cori'eepondinotov'thebenin A. and rock` thepoint thereoli-heslfeiien through thetiiin shaft(Z of thai', patent.

piece sind has ihus Started theloperetion oi Y The essentie-i partecimyinventionure zi my improvedQinechzinisin which 'fills in thetiiiiiipiziee detector, a, 'lifter'iol"'thedetectora AiLiiin-pieee. aiet-beek device -ior ille take-up rachet *A further-objeei- 'of my`invention is to wiieei, and eonneetions 'whereby thedeeetproifide meanswhereby the-'detector firm ing action 'or the detector will-sei; inoperzi- Bd Wiii ine-returned toiis -norinaiposition e pre- 'tion-"theiet-beek-fdevioe7 die ii'iier,v `and the Ydetermined time ei'i'er*tiieweavingis re` :usuel:iiingg'repieniehin@means started. The deeeiorcomprises; e rod 2i, airi'zlciied VA furtherobject-foi4 my invention visthe to `the breast oezun i. .i purr.V 4e, extending Construction of adevice wiiieh'wiiioperate et right @ingles toone endofrod 3, -irries 90onijgrv Iwhen theiiiiing'ifork iiziiis no operate th.eusualresiiienriiezid orV iinger yoi lthe A stilihfurther'objectlofinyfinvention is seine -geneiaicharacter-nee theY iiezidshownthe-construciion oi: ai device which may bei" iiimy applicationieriaiiN054? 1,892; filed 4B usedom' the ordinary Draper loom without`V,.iiiziy QB," i925., inenioned"above'. "i A e'oii reniovingfihefilling,fork which is ueedon l (3, eroundfihe :part 4;" presses the loose 95"that iooin. Y i against jiie iiezid 5, wiiiie ehe Tension 4Thisinveniion' ie en improvement of the-i o-itiie eiirirfr iS 'edjueied byIneens oi u coieructure deeeriiiedmid eieinied in'inyeppiiim" heid'in-'nositioii by a sei;y screw; 9. cation' Seriali N opl/1712892,iiied" Mey 23,192L` of theeieth .eenaeiing point ori' iiiiih these andfurther 'ijeocs in'view, .ii-'H' 5 away romtiiebreesi beam 'l is mihere'preseniediilthe draw igsoneembodi by Coninck o'fiiiie 'Coiier 7`with a nient oiiny ini/entionyin Whicii'drziwings: ni ich' 1i()4 ini'iieiiead.

Figure l is e top p'l'zinof e partei my de- 'lfiie end "oi rodopposiieipari; 4 'fermirice, showing;dispositiononthe fabric. in'nuiese'tiheiiilin'fork side-of` i'he'ioouLand the process of Weavingand its connection carries-anextensi-on lll 'The exteiision ll is im"'with the starting rod. in a piene para-Hei with .part Li, but et i difiFigure 2 is inside" eievation of the thin*ferent angie 'in elle Dianeyeotheewhen pere Figure 2, extension 1l will extend upwardly as shown inFigure 3. The part `11 extends through a loop 15, connected to a pawl16, The pawl 16 is pivoted at one end to a rock arm on the starting'rod, as will be described later.` l/Vhen the finger rests on the cloth,the pawl 16 is heldin inoperative position; but when the. linger dropsthrough a thin place. the end of the pawl is lowered into operativerelation to a special -form of brass 17 on the usual snake head 17a otthe loom. The pawl is then moved lengthwise, rocking the arm to which itis attached, and also raising the finger 'tree from the cloth by themeans now to be described.

A rod 18 consists of a part 18a and a, part 18b at right angles to thepart 18% lt will be apparent that the part- 1Sn normally rests on thebase of the loop 15. The part 18b is attached to the breast-beam bymeans of loops 19 and 19 through which it passes. rIhese loops areplaced above attaching loops for the rod 3, the loops for both rodsbeing attached by the same screw C. The

rod 18 is adjustably attached to a casting' 2O by insertion in anopening` therein and in which it is held by a set screw Q1.

An arm 2Q which is an integral part of the casting 20, and extendssubstantially parallel with the finger-supporting part f1, hasar-ighbangled extension 523 through which is a slot 9A: for the part 41.To this 4 arm ispivotally attached an adjustable supporting memberhaving a roughened toot 30a to enable it to act on the cloth. lt may beadjusted as toi height by a slot 31, The topi of this member has aweighted head 32 which tends to swing` the lower part of the membertowards the fell against an adjustable stop Another adjustable stop,3ft, serves as a limit to the swing` et this meine ber in the oppositedirection. Stops 33 and 34 are, preferably,*separate pieces having;holes in their ends which are slipped over the pivot ot member 30, andare adjusted i upward and downward with the adjustment vof that pivot 1nslot 3l, and are secured in adjusted position about the pivot when it istightened in adjusted position in the slot,

`It will be apparent that when 'the pawl 16. is pressed backward, therod 18 and attachments will raise the resilient head irom the cloth. l

ln Figure 7 is shown an alternative forni of pawl, 16a. By use ot thisform or' pawl the linger lifting device so far described may be appliedto aloorn having the thin place detector of the Clayton and BentleyPatent No. 828,534, granted August 1i, 1906. When the arm 22 is raisedthe foot y of the supporting member is urged towards the fell by theweight 32, and as the foot is l,approximately concentric with the axisof its ythrough it the linger or head, in raised pcf pivot, 'it willhold the arm 22, and

is vertically beneath the pivot.

sition as long as any portion of thcl foot The distance the cloth moves".vhiic the finger is held raised depends upon the adjustment ot stop33.

ils before stated, the pawl 1G, when the head 5 drops through a thinplace, is curried down and engages with a special forni ot brass 1i'attached to the usual Vforni o'i snake head 117 by which the parte arecarried. back to the positions indicated in dotted lines in Figures 2and 2l. The pawl 1G is jgiivotally connected to :in attnchinnr device 3Twhich is held in adjusted position in an arm 38 by a set screw 23S, Thepivot of pawl 16 being: eccentric to the pin 37 of the device 3T allowsthe :uljustnunt ot the pivot ot the pawl up, down, forward, backward orlaterally, rlhe arm 25S encir cles the starting; rod 2.

On one side oi the arm 38 whereA it surrounds rod is a collar Clt) heldin position by a set screw Afr0. On the other sido ot the arm is ucollar -tl held in position h v set screw A. tooth i3 on collar -1-1cooperates with a tooth e144 on the arm 2H. The teeth are so relatedthat the rod nmy rock on the normal operation ot thc inzichine withoutcontact of the teeth, but when erin 39 is rocked the teeth Contact andcause rocking ot. the rod to start the automatic` iillingreplenishingdevice.

The armi 38 has a threadc il openingv rcceiving the threaded end of arod 3S which is locked in adjusted position hy lock nut 38. The outerend of rod 3P is bont downward, and to its lower end there is attachedn. finger A detent 4G, take-up pawl 17, and takeup ratchet wheel t9 areshown somewhat dia-graininatically, they being; conventional parts oli aDraper loom. The Yfree end of the finger inovcs in :i slot in dotcnt"i6, and when thc ariu 38 is rocked, the dctcnt Ai6 is raised and inturn raises tin` take-np pawl 47, so that the take-up ratchet wheel i@is vtreed ilroi'n its operating devices.

lVhe-re one or more let-bach' pziwls or dctents are provided to lot hackthe take-up wheel in Jihe ordinary operation of' the lilling iork, meansare provided .vhcrehy the oscillation oi arm 33S will release theseletback detents as well. as the take-up pawl and detcnt. As thisreleasing moans can he supplied without invention and will dcpend uponthe type of lets-hack pawl used, it is not shown.

lil hen 'treed by the action of arm ilo 'from all pawls and detentscontrolling its normal operation, the take-up ratchet wheel is let backa definite distance by the following devices:

A detent carrier is pivoted c-onccntri ca with the takeup wheel l?, Adetcnt 5l Pilffed at 52 to the carrier 50, and

Uitl

v'a weight 53 is connected to the'sdetent to rier is fixedlyf weighted,as shown in Figure i, but if desired a sliding weight, 56, may besubstituted, ias shown. in Figure et, and fixed in adjusted position onthe carrier by a set screw, 57.

The detent pivot 52 is extended, as shown at 58 in- Figure 5. A stop,159, is fastened toy the frame of the machine, preferably adjustab-ly,by means of bolts `60, '61, passing through slots 62,63.' The end, (Si,of the stop extends into the patlrofthe extension 58,"and when theltaire-'up wheel is freed, "by the Vmovement of arm 3S, from its normal-voperating devices, it islet bac-lr a definite distance depending uponthe' distance between the norinahposition of 'the detent 51and itsposition when the stopy end 64: is encountered.- AIt is evidentfitlratVinstead of having the stop 59j'iastened -bytwo bolts, it lmay be'adjustably fastened by using one bolt. i

To use my invention on a loom having a double filling fork, such as theloom known as the Draper J. Model, it is necessary to utilize theimprovement disclosed in Fig urcs 8, 9 and 10. To the shank or lever 70ofthe snake head as used on a Draper loom, there is attac-hed animproved lever '71 by means of a base 72 clamped by 'a bolt 723 aroundthe shank 70. My improved' lever reaches above the usual form of thebrass of the snake head 17a, and has at the top thereof a new forml ofsnake head 74; with which the lever 16 engages when my improvement isused with a loom having a double filling fork. A part of theconventional. lilling 'fork slide 75 is shown in Figure 9 for thepurpose of' indicating the position of the improved lever. This featureis more fullydisc-losed in my copending application Serial No. 171,892,filed May 23, 1921.

The operation of the invention has been referred to in connection withthe description of its various parts, and detailed description or' itsoperation is unnecessary. Itwill be clear without such detailed de*-scription that have invented a finger raising device which may bereadily applied to a machine equipped with a thin place detector such asshown inthe Clayton and Bentley patent; that I have provided a supportfor the finger raiser that may be applied to any finger raising arm andmay bc adjusted for holding the arm raised a definite distancedulringlthe desiredy extent i of -mevement 'ofthe cloth; that 1I haveprovided a let-back device capable of allowing yany desired extent voflet-back without vany material'change in thefre'lationvof the flet-baci: detent to the ratchet-wheel; and that when -my improveddevices are used together a device is provided which will detecta thinfpla'ce, let back the. cloth the exact numberwof picks necessary t-oremedy vthe faulty action ofv the loomystart the automaticlling-replenishing device, raise'the detector outct fcontact with thecloth to allow the letback,and `maintain it yraised theexact number 'ofpiclrs'desired before it resumes its `detecting position.`

Vifhat I clairn'is:

`l. In a loom, a moving member, a thin place detector comprising afingernormal'ly resting onA thecloth adjacent to the fell, la

pawl, and connectionsgbetween the finger and' y'pawl holding 'the lpawlIinv inoperative position while-the finger rests: on the cloth andallowin thefpawl 'to engage the moving partV when -t e finger drops,--anger raiser having a portion in the path of the lpawl and a portionover-the cloth,"and-means rigidly connecting said portions and a lostmotion connection between the i portion. `over lthe cloth and thefinger.

2. In a loom, a moving member, a thin place detector comprising a lingernormally restingon the cioth adjacent to the fell, a pawl, andconnections between the finger and pawl holding the pawl in inoperativeposition while the finger rests on the cloth and allowing the pawl toengage the moving part when the finger drops, a finger raiser having aportion in the path of the pawl and a portion over the cloth and meansrigidly connecting said portions, a lost motion connection between theportion over the cloth and the finger, and a supporter pivoted to thefinger positioning devices above the cloth and on an axis parallel tothe fell.

3. In a loom, a thin place detector comprising a finger normally restingon the cloth, an arm connected to the finger, and a supporter pivoted tothe arm on an axis parallel with the fell and having an extended footconcentric with its axis.

4. In a loom, a thin place detector comprising a finger normally restingon the cloth, an arm connected to the linger, and a supporter pivoted'to the arm on an axis parallel with the fell and having an extended footconcentric with its axis, the bottom of the foot being roughened.

5. In a loom, a thin place detector comprising a finger normally restingon the cloth, an arm connected to the nger, a supporter pivoted to thearm on an axis parallel with the fell and having an extended .rootconcentric with its axis, means urging the foot towards the fell, and anadjustable stop limiting the swing of the foot towards the fell. t y y.

6. lIn a loom, althin place detector co1nprising a fingernormallyresting on the cloth, an arm connected to the finger, means set`in operation by the'dropping of the finger to cause the arm to raise thefinger above the cloth, Vand a supporter'pivoted to the arm on an axisparallel with the fell and having an extended foot concentric with .its

prising a fingernormally resting on the cloth, a-narm, lost motionconnections between the arm and finger, means set in operation by thedropping of theI finger Jfor causing the armto raise the finger, and asupport pivoted to the arm on an axis paralle] with the fell and havingan extended :toot concentric with its axis.

9..In a loom, a thin place detector comprising a finger normally restingon the cloth, an arm, lost motion connections between the arm andfinger, means set in operation by the dropping of the finger for causingthe arm to raise the finger, a support pivoted to the arm on an axisparallel with the fell and having an extended foot concentric with itsaxis, the bottom of the foot being roughened, and a stop limiting theswing of the foot.

lO. In a loom, a thin place detector comprising a' finger normallyresting on the cloth, an arm, lost motion connections between the armand finger, means set 1n operation bythe dropping of the finger forcausing the arm to raise the finger, a support pivoted to the arm on anaxis parallel with the fell and having an extended foot concentric withits axis, a stop limiting;r the swing of the foot, and an adjustablelet-back device adaped to let back the cloth a distance' corresponudingto the swing of said foot when the detector operates.

In testimony whereof I aix my si ature.

WILLIAM F. CLA TON.

